Grade ER8
Corresponding Standard EN 13262-2004
Railway applications - Wheelsets and bogies - Wheels - Product requirement
Classification Carbon Steel
ER8 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo V More
Minimum Value - - - - - - - - - - Cr+Mo+Ni≤0.5
Maximum Value 0.56 0.4 0.8 0.02 0.015 0.3 0.3 0.3 0.08 0.06
ER8 Mechanical Properties
condition Mark
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Impact Energy Absorption
KV2
J
Wheel test sample Rim 860~980 ≥540 ≥13 -20°C,≥10;+20°C,KU2≥17
Radiator plate sample Spoke Tensile strength reduction value ≥ 120* ≥16

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